US4762373A - Process for rounding the bristle tips of toothbrushes and toothbrushes prepared by this process - Google Patents

Process for rounding the bristle tips of toothbrushes and toothbrushes prepared by this process Download PDF

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Publication number
US4762373A
US4762373A US06/903,762 US90376286A US4762373A US 4762373 A US4762373 A US 4762373A US 90376286 A US90376286 A US 90376286A US 4762373 A US4762373 A US 4762373A
Authority
US
United States
Prior art keywords
toothbrushes
rounding
bristle
bristle tips
laser radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/903,762
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English (en)
Inventor
Walter Amos
Horst Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blendax GmbH
Original Assignee
Blendax Werke R Schneider and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blendax Werke R Schneider and Co GmbH filed Critical Blendax Werke R Schneider and Co GmbH
Assigned to BLENDAX-WERKE R. SCHNEIDER GMBH & CO. reassignment BLENDAX-WERKE R. SCHNEIDER GMBH & CO. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMOS, WALTER, KLEIN, HORST
Application granted granted Critical
Publication of US4762373A publication Critical patent/US4762373A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0284—Bristles having rounded ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to an improved process for rounding the bristle tips of toothbrushes and to toothbrushes prepared by this process.
  • the object of the present invention is to avoid these disadvantages.
  • the solution of this problem consists in effecting the rounding of the bristle tips of toothbrushes by laser radiation in an electrical field.
  • the bristle head of a conventionally manufactured toothbrush is charged with electrons. Then, laser radiation frontally acts upon the bristle head while the bristles are in an electrostatic field. The charged, fused bristle tip is attracted by the complementarily charged electrode (anode) and thus is brought into a longish, ellipsoid form. The diameter of the rounded bristles is, if at all, only slightly higher than the diameter of the individual filament before treatment.
  • the FIGURE schematically describes the treatment method:
  • the preferred distance D between the electrodes is between approx. 0.2 and approx. 3 cm.
  • the preferred field intensity was determined from approx. 3 kV/cm to approx. 12 kV/cm; while the preferred laser intensity is between approx. 5 W/cm 2 to approx. 150 W/cm 2 .
  • the laser radiation source may be a well known solid-state or gas laser, preferably a CO 2 laser.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Pens And Brushes (AREA)
US06/903,762 1985-09-20 1986-09-05 Process for rounding the bristle tips of toothbrushes and toothbrushes prepared by this process Expired - Lifetime US4762373A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3533533 1985-09-20
DE3533533A DE3533533C1 (de) 1985-09-20 1985-09-20 Verfahren zum Abrunden der Borstenenden von Zahnbuersten

Publications (1)

Publication Number Publication Date
US4762373A true US4762373A (en) 1988-08-09

Family

ID=6281454

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/903,762 Expired - Lifetime US4762373A (en) 1985-09-20 1986-09-05 Process for rounding the bristle tips of toothbrushes and toothbrushes prepared by this process

Country Status (14)

Country Link
US (1) US4762373A (de)
EP (1) EP0216192B1 (de)
JP (1) JPH0669409B2 (de)
KR (1) KR870002800A (de)
AT (1) ATE51747T1 (de)
BR (1) BR8604487A (de)
CA (1) CA1267938A (de)
DD (1) DD249628A5 (de)
DE (2) DE3533533C1 (de)
DK (1) DK155817C (de)
ES (1) ES2002179A6 (de)
GR (1) GR862388B (de)
NO (1) NO163352C (de)
ZA (1) ZA866732B (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979782A (en) * 1988-06-15 1990-12-25 Coronet-Werke Heinrich Schlerf Gmbh Process and apparatus for production of bristle products
US4998779A (en) * 1989-12-26 1991-03-12 North American Philips Corporation Apparatus and methodology for producing rounded brush tips
US5007686A (en) * 1987-12-22 1991-04-16 Blendax Gmbh Process for rounding bristle tips on brushes
US5165761A (en) * 1991-12-30 1992-11-24 The Procter & Gamble Company Method of making improved toothbrush having multi-level tufts with substantially uniformly rounded bristle ends in each tuft
US5224763A (en) * 1991-12-30 1993-07-06 The Procter & Gamble Company Method of fastening bristle tufts to bristle carrier
WO1993013748A1 (en) * 1992-01-14 1993-07-22 Gillette Canada Inc. Composition for desensitizing teeth
US5250288A (en) * 1991-09-13 1993-10-05 Gillette Canada, Inc. Method for desensitizing teeth
US5660817A (en) * 1994-11-09 1997-08-26 Gillette Canada, Inc. Desensitizing teeth with degradable particles
US5927819A (en) * 1997-02-28 1999-07-27 Gillette Canada Inc. Method and device for trimming and end-rounding bristles
AU712142B2 (en) * 1992-01-14 1999-10-28 Gillette Canada Inc. Composition for desensitizing teeth
US6220673B1 (en) * 1999-07-12 2001-04-24 Colgate-Palmolive Company Laser joining toothbrush heads to handles
US6500296B1 (en) * 1998-06-16 2002-12-31 Coronet-Werke Gmbh Methods for connecting, marking and structurally modifying monofilaments
US20040074034A1 (en) * 2002-09-20 2004-04-22 Colgate-Palmolive Company Toothbrush
US20070067933A1 (en) * 2005-09-26 2007-03-29 Kenneth Waguespack Toothbrush that Provides Enhanced Cleaning and Comfort
US8990996B2 (en) 2002-08-09 2015-03-31 Colgate-Palmolive Company Toothbrush
WO2019035758A1 (en) 2017-08-17 2019-02-21 Tepe Munhygienprodukter Ab METHOD AND APPARATUS FOR ARRONDING END OF HAIL

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842684A1 (de) * 1987-12-22 1989-07-06 Fraunhofer Ges Forschung Verfahren zum abrunden von borstenenden von buersten
DE3920107C1 (en) * 1988-12-19 1990-10-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De Process for rounding-off bristle ends of brushes - includes applying pulsed laser onto numerous bristle ends
CH700547B1 (de) * 2009-03-06 2017-08-15 Reishauer Ag Verfahren zum Abrunden von Borstenenden einer Bürste.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386966A (en) * 1943-03-10 1945-10-16 Hydraulic Dev Corp Inc High-frequency electrostatic heating of plastics
FR1453829A (fr) * 1965-03-05 1966-07-22 Procédé de fabrication de brosses et analogues
US4147488A (en) * 1976-04-21 1979-04-03 Saint-Gobain Industries High frequency apparatus for forming structural shapes
US4441227A (en) * 1981-03-18 1984-04-10 Argembeau Etienne Y D Brushes and the manufacture thereof
US4613470A (en) * 1983-06-06 1986-09-23 Sebastian Aftalion In line process for sequentially forming and shaping a filament

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587792A (en) * 1946-08-15 1952-03-04 Sivers Carl Henric Von Method for rounding the tips of bristles
DE810867C (de) * 1950-01-11 1951-08-13 Brosse & J Dupont Reunis Verfahren und Vorrichtung zum Abrunden und Polieren der Enden von Buerstenborsten
DE1083781B (de) * 1958-12-22 1960-06-23 Ver Buerstenfabriken G M B H Borste aus natuerlichem oder synthetischem Werkstoff
DE3309927A1 (de) * 1983-03-19 1984-09-20 Henkel KGaA, 4000 Düsseldorf Haarbuerste

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386966A (en) * 1943-03-10 1945-10-16 Hydraulic Dev Corp Inc High-frequency electrostatic heating of plastics
FR1453829A (fr) * 1965-03-05 1966-07-22 Procédé de fabrication de brosses et analogues
US4147488A (en) * 1976-04-21 1979-04-03 Saint-Gobain Industries High frequency apparatus for forming structural shapes
US4441227A (en) * 1981-03-18 1984-04-10 Argembeau Etienne Y D Brushes and the manufacture thereof
US4613470A (en) * 1983-06-06 1986-09-23 Sebastian Aftalion In line process for sequentially forming and shaping a filament

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5007686A (en) * 1987-12-22 1991-04-16 Blendax Gmbh Process for rounding bristle tips on brushes
US4979782A (en) * 1988-06-15 1990-12-25 Coronet-Werke Heinrich Schlerf Gmbh Process and apparatus for production of bristle products
US4998779A (en) * 1989-12-26 1991-03-12 North American Philips Corporation Apparatus and methodology for producing rounded brush tips
US5250288A (en) * 1991-09-13 1993-10-05 Gillette Canada, Inc. Method for desensitizing teeth
US5165761A (en) * 1991-12-30 1992-11-24 The Procter & Gamble Company Method of making improved toothbrush having multi-level tufts with substantially uniformly rounded bristle ends in each tuft
US5224763A (en) * 1991-12-30 1993-07-06 The Procter & Gamble Company Method of fastening bristle tufts to bristle carrier
WO1993013748A1 (en) * 1992-01-14 1993-07-22 Gillette Canada Inc. Composition for desensitizing teeth
AU712142B2 (en) * 1992-01-14 1999-10-28 Gillette Canada Inc. Composition for desensitizing teeth
US5660817A (en) * 1994-11-09 1997-08-26 Gillette Canada, Inc. Desensitizing teeth with degradable particles
US5741479A (en) * 1994-11-09 1998-04-21 Gillette Canada Inc. Desensitizing teeth with degradable particles
US5927819A (en) * 1997-02-28 1999-07-27 Gillette Canada Inc. Method and device for trimming and end-rounding bristles
US6500296B1 (en) * 1998-06-16 2002-12-31 Coronet-Werke Gmbh Methods for connecting, marking and structurally modifying monofilaments
US6220673B1 (en) * 1999-07-12 2001-04-24 Colgate-Palmolive Company Laser joining toothbrush heads to handles
US8990996B2 (en) 2002-08-09 2015-03-31 Colgate-Palmolive Company Toothbrush
US9603441B2 (en) 2002-08-09 2017-03-28 Colgate-Palmolive Company Toothbrush
US20040074034A1 (en) * 2002-09-20 2004-04-22 Colgate-Palmolive Company Toothbrush
US7503092B2 (en) 2002-09-20 2009-03-17 Colgate Palmolive Company Toothbrush
US20090183332A1 (en) * 2002-09-20 2009-07-23 Colgate-Palmolive Company Toothbrush
US20100192319A1 (en) * 2002-09-20 2010-08-05 Colgate-Palmolive Company Toothbrush
US7937795B2 (en) 2002-09-20 2011-05-10 Colgate-Palmolive Company Toothbrush
US8099820B2 (en) 2002-09-20 2012-01-24 Colgate-Palmolive Company Toothbrush
US20070067933A1 (en) * 2005-09-26 2007-03-29 Kenneth Waguespack Toothbrush that Provides Enhanced Cleaning and Comfort
US8533891B2 (en) 2005-09-26 2013-09-17 Colgate-Palmolive Company Toothbrush that provides enhanced cleaning and comfort
WO2019035758A1 (en) 2017-08-17 2019-02-21 Tepe Munhygienprodukter Ab METHOD AND APPARATUS FOR ARRONDING END OF HAIL

Also Published As

Publication number Publication date
CA1267938A (en) 1990-04-17
DD249628A5 (de) 1987-09-16
DK447586A (da) 1987-03-21
NO863727L (no) 1987-03-23
NO163352C (no) 1990-05-16
BR8604487A (pt) 1987-05-19
DK155817C (da) 1989-11-13
ES2002179A6 (es) 1988-07-16
DK155817B (da) 1989-05-22
NO863727D0 (no) 1986-09-18
ATE51747T1 (de) 1990-04-15
DK447586D0 (da) 1986-09-18
EP0216192B1 (de) 1990-04-11
NO163352B (no) 1990-02-05
DE3533533C1 (de) 1986-09-04
JPH0669409B2 (ja) 1994-09-07
DE3670201D1 (de) 1990-05-17
GR862388B (en) 1987-01-20
KR870002800A (ko) 1987-04-13
EP0216192A1 (de) 1987-04-01
ZA866732B (en) 1987-04-29
JPS62109505A (ja) 1987-05-20

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Owner name: BLENDAX-WERKE R. SCHNEIDER GMBH & CO., RHEINALLEE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:AMOS, WALTER;KLEIN, HORST;REEL/FRAME:004598/0431

Effective date: 19860820

Owner name: BLENDAX-WERKE R. SCHNEIDER GMBH & CO.,STATELESS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AMOS, WALTER;KLEIN, HORST;REEL/FRAME:004598/0431

Effective date: 19860820

Owner name: BLENDAX-WERKE R. SCHNEIDER GMBH & CO.,GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AMOS, WALTER;KLEIN, HORST;REEL/FRAME:004598/0431

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